Vane for fishery



`Patented Sept. 11,1928.

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CARLHANSEN, ,01"` "ESBJERGQ .AND rami Lern, or voorniiiiaeint `lDENMARK;'slim 'i A L ETH ASSIGN'OR TO SAIDHANSENyu verniV Fon FrsHnRY. A

.j "Alipiatib'rraied neee'mbr 2, 192s, semina isaiaaand nerimaikiijec'einter e, 'i925 i .The present' inventionrelates "to otter boards ofthe kind placed betweenthe' lines froin'th'eship andthe draglines ffor thonet,

the object beingto move each of these linesA f sidcnmys,I in such manner thatjthere will be y formed inkfrontfofthe net a spaceof suitable Width Within which spacethe ishy swimming in thewaterwill be directed towards` the netpartly by the*otterjboards'land partly by the draglines. fr 'Y L" The distinguishingL feature of the present invention ist-'hattheotter board, on the upper edge of `i`iihich i'tf has previously been proposed to use steering planes and adjustable horizontal rudders, consists in known inanner of a plate to one side of which theline j from the ship isattached by means of a crow rudden In connection With .each of the.

consisting'ofv net, lines and otter boards, inv side elevation and top View to a smaller scale.k

foot and to the other side of which the drag` line for the net isV attached by means of a hight, is fitted at the top as Well as at the bottoin Witha-steering plane, and in connection v with the former one and if desired also in connection with the latter one, a horizontal steering planes steering strips may be provided on the sides of the planes facing one another. The horizontal rudder or rudders may either be stationary or adjustable. In the accompanying drawing illustrative of the invention.' Y

Figs. l to 3, respectively, show an otter board according to the invention, in side elevation, front elevation and top view,

Fig. 4; isa detail to a larger scale, and Figs. 5 and 6', show respectively, atrawl j `As shown, the otter board, the Weight of which is adjusted in such a manner that its specific gravity is the saine as that of Water, consists of a rectangular-.Wooden board a along the upperand lower edge of Which steering planes b are attached at right angles tothe board ia and project equally far to either side of the latter.V The steering planes b are similarly formed byV rectangular Wooden boardsthe Width of which is suitably reduced gradually towards the rear, in such a manner that the steering planes acquire the shape shown in Fig. 3. To one end of the lupper steering plane b, suitablythe top end, there is attached a horizontal rudder c being for instance of the saine yWidth as the steering plane'. The horizontal rudder may either be rigidly attached ina slanting position -froiit end, and instead vder being provided only in connection with relativelyto the steering yplane or, 'asV sho'ivii i in Fig. `1,'it inay be hingedto the front 'edge oi the steering plane, iii'sfucli inanner that it inay be turned into a more o rfl'ess obliliie position relatively to they-steering` plane.- 'The horizontal rudder is'retained the position,

to Whichit is adjusted,bynieans of a rod fthe tioiied above the horizontal rudder is placed vane.` There is nothat the front end'of the provided at variousl -05 ing to prevent the rudder being disposed at the rear end of the vane instead of at the oi the horizontal rudthe upper steering l plane, a horizontal rudc er inay also be provided in connection with -the lower steering plane and at the saine end of the vane as the rudder provided in connection with the upper steering plane.

Along the edges of each of the steering planes, on .the sides of the latter racing one another, there niay be provided steering strips n, see especially Fig. 2. Along the bottoni edge of the plate a, for vinstance in shape oi" metal bars d.

The connection ot the vane to the line o from the ship. is eliected by nieans of a ciow-loot g attached to one side ci" the board e, the two irontbranches of the crovwtoot being shorter than the two rear ones. In each of the latter there is inserted a resilient ineinber which is shown in section in F ig. fl. To the oppositesideot' the vane there is attached a biglitvAL to whichftlie dragline p from the net Q is connected.

Vhile fishing the vanos, as mentioned. above, should serveto niove the drag-lines some suitable distance to either side. j By the forward motion of the ship, the vaiicswill adjust themselves obliquely in relation to the direction of niotion. The horizontal rudder serves to torce the vane up towards the surballastk is provided,

llli) tace of the Water, and the steering planes are provided in order to maintain the raneV in vertical position in the Water, the forward inotion ot' the. vane producing eddies along the sides of the board ci, the said eddies Working against the steering planes and, thereby, maintaining the latter in equilibrium. Y The steering strips n assist in preservingthe position of equllibrium by Vforcing the current eddies into contact with the board a.

Instead of the vane being maintained inA the surface of the Water it may be caused,

by adjustment of the horizontal 'rudder c to stay more or less below the surface of the Water. n

l The resilientjmembers 7c are provided in the. two rearmost branches of the 'crowlfoot g, in order that the vanos may yield resil-l iently in case the speed of the ship is increased during fishing. ,f i

Having thus described our invention, what We claim isz- "1. AV device of ythe character described,

comprising a vertical board, a steering planol secured toesaid board at right angles thereto along -its upper edge, a steering plane secured to said 'board at right angles vthereto alon `itsbottoni edge, a rudder hingedly secure to the upper steering plane andadapted to beswung'from a position at an angle to the plane above the saine Vto a position at an angle to said plane below tHe/same, and means for maintaining said rudder in any ot' its adjusted positions. y

A deviceI of the characterdescribed, comprising a vertical board, a steering plane Asecured to said board at right angles thereto along'its upper edge, a steering plane secured to said board at right. angles thereto alongl t its bottom edge, steering strips secured to each of said planes at oppositesides of said vertical-hoard, a rudder hingedly secured to the upper steering plane and adaptcdto be swung from a `posit-ionY atan angle to the.

plane above the saine to apositon at any angle to said planebelow the4 saine, and means for maintaining said rudder in any of its ad- ]usted positions.

Intestnnony whereof We have signed our names to this specificatlon.

CARL HANSEN.y

PAUL LEfrH. 

